Nanojoule is 1e-9 joule units.
Nanojoules to Picojoules Converter — nJ to pJ
Convert Nanojoule (nJ) to Picojoule (pJ) using the exact conversion factor (1 nanojoule = 1,000 picojoule). See the formula, worked examples, and conversion table.
Nanojoules to Picojoules converter
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Picojoule is 1e-12 joule units.
Result = input x 1e-9 / 1e-12.
Energy units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Nanojoules to Picojoules
Nanojoule and Picojoule both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Specifically: Nanojoule is 1e-9 joule units, and picojoule is 1e-12 joule units.
Formula
picojoules = nanojoules × 1000
This factor comes from each unit's defined relationship to the category's base unit: 1 nanojoule equals 1e-9 base units, and 1 picojoule equals 1e-12 base units, so dividing one by the other gives the direct nanojoule-to-picojoule factor of 1000.
Simple example
1 nJ × 1000 = 1,000 pJ
1 nanojoule = 1,000 picojoules.
Real-world example
100 nJ × 1000 = 100,000 pJ
100 nanojoules = 100,000 picojoules.
Conversion table
| Nanojoule (nJ) | Picojoule (pJ) |
|---|---|
| 1 nJ | 1,000 pJ |
| 10 nJ | 10,000 pJ |
| 50 nJ | 50,000 pJ |
| 100 nJ | 100,000 pJ |
| 500 nJ | 500,000 pJ |
| 1,000 nJ | 1,000,000 pJ |
Reverse conversion: Picojoule to Nanojoule
1 pJ × 0.001 = 0.001 nJ
1 picojoule = 0.001 nanojoules.
nanojoules = picojoules × 0.001
For a page dedicated to this direction, see Picojoule to Nanojoule.
Understanding the Nanojoule (nJ)
Nanojoule is 1e-9 joule units.
Understanding the Picojoule (pJ)
Picojoule is 1e-12 joule units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many picojoules are in 1 nanojoule?
1 nanojoule equals 1,000 picojoules, using the exact defined conversion factor rather than an estimate.
How do I convert nanojoule to picojoule?
Multiply the nanojoule value by 1000. The converter above does this instantly to whatever precision you set.
How do I convert picojoule back to nanojoule?
Use the reverse factor: 1 picojoule equals 0.001 nanojoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a nanojoule?
Nanojoule (nJ) is a unit of engineering.
What is a picojoule?
Picojoule (pJ) is a unit of engineering.
Is the nanojoule to picojoule conversion exact?
Yes. Both nanojoule and picojoule are defined by fixed standards rather than physical artifacts, so the factor of 1000 used above is exact to as many digits as you choose to display.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.